Koeberg Nuclear Unit 2 Achieves Year of Continuous Power Supply with 99.4% Efficiency

by Oluwatosin Racheal Alabi

KEY POINTS


  • Unit 2 has run non-stop since major upgrades, achieving a 99.4% EAF
  • Provides stable, low-emission power for the Western Cape and strengthens the national grid.
  • Scheduled maintenance ensures sustainability and protects investments for the next 20 years.

On 9 March 2026, Eskom announced that Koeberg Nuclear Power Station’s Unit 2 has successfully operated for 365 consecutive days since its major upgrades were completed, maintaining an impressive 99.4% Energy Availability Factor (EAF).

The unit contributes approximately 946 MW to South Africa’s national grid, strengthening energy stability in the Western Cape and nationwide.

The milestone comes after significant upgrades, including the installation of new steam generators, completed in December 2024.

Eskom’s Group Executive for Generation, Bheki Nxumalo, praised the dedication of engineers, operators, and support staff, noting the achievement as proof of South Africa’s robust nuclear skills base.

Operational Reliability Supports Economy and Environment

Although Unit 2 is scheduled for planned maintenance on 26 April 2026 preventing it from surpassing its previous 454-day record run the current 412-day projected operation reflects strong reliability. Continuous operation reduces dependence on distant coal-fired power stations, ensures a stable electricity supply, and provides environmentally friendly, low-emission energy.

Unit 2’s consistent performance reinforces economic growth, protects jobs, and bolsters energy security. Planned outages are scheduled strategically to safeguard investments and guarantee operational reliability for the next two decades.

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